An embodiment of the present invention provides a system and method for remotely upgrading the firmware of a target device using wireless technology from the Bluetooth-enabled PC or Laptop to another Bluetooth device e.g., mouse, Keyboard, headset, mobile phone etc. Existing solutions either may not have upgrade capabilities, or may require the use of proprietary cables. An embodiment of the solution proposed here extends the “Connecting without cables” concept of Bluetooth to firmware upgrades. The system comprises a host device for sending the firmware required for upgradation; and a target device containing a first code and a second code wherein said first code identifies details of the firmware; and said second code identifies the completion of the download operation when the firmware is successfully downloaded.